Precautions for installation of gas pressure regulating cabinets Gas pressure regulating cabinets, pressure regulating stations are used as pressure regulating devices for gas transmission and distribution networks, and are widely used in gas supply for community, public service users, direct combustion equipment, gas boilers, industrial furnaces, etc. system.
(1) Set the pressure, follow the principle of high to low, and follow the steps one by one, namely: cut off the pressure - release the pressure - work pressure.
(2) After the pressure is set, it is necessary to check the closing pressure to verify its performance and whether it meets the required value.
(3) The outlet valve can be opened after the pressure setting meets the requirements. The outlet valve must not be opened before this to prevent accidents.
(4) Precision instruments should be protected to prevent pressure fluctuations and damage the instrument.
(5) In the “regulation of voltage regulating equipment, if uninterrupted air supply is required, the pressure should be manually controlled by bypass, and the pressure regulating valve should be controlled by one hand.
Table, observe the pressure change at all times, keep the outlet pressure within the required pressure range, and slowly open the regulator outlet after the pressure regulator pressure setting is completed.
The valve, after the regulator is normally supplied with gas, closes the bypass valves.
(6) If the regulator adopts 2+0 one open and one closed type, both roads need to be debugged, open one way, close one way (standby), and the inlet and outlet valves should be in the alternate way.
Pressurize it to prevent the pressure regulator film and spring from being pressed, causing fatigue.
(7) If the regulator port uses two channels to automatically switch the air supply, the pressure parameters should be set according to the main and auxiliary circuits, and then the two inlet and outlet valves should be fully open. The automatic switching has higher performance requirements for the regulator. Voltage regulation accuracy ≤ 2.5%. The closing accuracy is ≤10.
Automatic switching test: increase the main road pressure (simulation fault), make the main road pressure super high and cut off the valve action, cut off the main road natural gas, stop the gas supply, observe whether the auxiliary road can start the white line according to the set pressure. . After the inspection is passed, the main circuit shut-off valve is reset, and the pressure of the main circuit regulator is adjusted back to the original set value, so that the pressure of the main and auxiliary two-way regulator is set, the main road is mainly supplied with gas, and the auxiliary road is provided. Standby, when the main road fails, the auxiliary road regulator starts to realize continuous uninterrupted air supply. This method is commonly used in key public welfare and industrial and commercial household gas supply.
(8) Series monitoring regulators The series monitoring of regulators and regulators mostly adopts the form of passive monitoring, that is, the monitoring regulator is fully open.
(From Hebei Zhenxing Gas Pressure Regulator Co., Ltd. ** http://)
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